Catostomus insignis
| Catostomus insignis | ||||||||||||
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captured Sonora Sucker |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Catostomus insignis | ||||||||||||
| Baird & Girard , 1854 |
Catostomus insignis , in English. Sonora Sucker, is a medium-sized,nativeto North America and typicalsucker carp .
distribution and habitat
Catostomus insignis occurs in the river systems of the Gila River and Bill Williams River in the US states of New Mexico and Arizona and in the Mexican state of Sonora . The species can live in different habitats, live in cold streams as well as in rivers with warm water. It prefers rocky, deep and relatively calm waters. In daylight and in strong sunlight, these suction cups tend to stay in the shade.
description
Catostomus insignis has a spindle-shaped body with a large head. The lower lip is relatively large and without fleshy lobes. The dorsal fin is angular and its scales are relatively large, but less numerous than in other Catostomus species. The body is clearly two-colored, with a brown back and a yellowish underside. Adult fish can reach a body length of 80 centimeters with a weight of two kilograms.
Fins formula from the first description: dorsal II / 11, anal II / 7 + 1, caudal 3.I.8.8.I.3, ventral 10, pectoral 18.
Way of life
Their diet consists of microorganisms , crustaceans and other invertebrates . They are omnivores and feed from the early hours of the morning until late at night. Depending on the occurrence, their spawning season begins in late winter through to early summer. To do this, the fish migrate into small streams and lay their eggs in small bumps on the gravel bottom. Catostomus insignis is considered a very local fish species that does not leave its habitat even during floods. In the Salt River Canyon, where the type specimen comes from, they have almost completely disappeared after the predatory flat-headed catfish ( Pylodictis olivaris ) appeared strongly .
Endangerment status
The habitat of the Sonora Sucker is endangered. Erosion and large-scale sand deposits have reduced their habitat. The Arizona Game and Fish Department has measures and management plans in place to conserve the Sonora Sucker. This was preceded by studies on the population dynamics of Catostomus insignis in the Lower Salt and Lower Verde Rivers.
Web links
- Arizona Game and Fish Department - Sonora Sucker Profile (PDF; 31 kB)
- Robert W. Clarkson and WL Minckley: Morphology and Foods of Arizona Catostomid Fishes: Catostomus insignis, Pantosteus clarki, and Their Putative Hybrids, Copeia, Vol. 1988, no. 2 (May 18, 1988), pp. 422-433 (Eng.)
- Catostomus insignis inthe IUCN 2013 Red List of Endangered Species . Posted by: NatureServe, 2011. Retrieved December 19, 2013.
Individual evidence
- ↑ a b c , SF and CF Girard 1854 (ca. 20 May): Descriptions of new species of fishes collected in Texas, New Mexico and Sonora, by Mr. John H. Clark, on the US and Mexican Boundary Survey, and in Texas by Capt. Stewart Van Vliet, US A . Proceedings of the Academy of Natural Sciences of Philadelphia v. 7: 24-29.
- ↑ Catostomus insignis on Fishbase.org (English)